EP 3109861 A4 20171101 - SIGNAL CLASSIFYING METHOD AND DEVICE, AND AUDIO ENCODING METHOD AND DEVICE USING SAME
Title (en)
SIGNAL CLASSIFYING METHOD AND DEVICE, AND AUDIO ENCODING METHOD AND DEVICE USING SAME
Title (de)
SIGNALKLASSIFIZIERUNGSVERFAHREN UND -VORRICHTUNG UND AUDIOCODIERUNGSVERFAHREN UND VORRICHTUNG DAMIT
Title (fr)
PROCÉDÉ ET DISPOSITIF DE CLASSIFICATION DE SIGNAL, ET PROCÉDÉ ET DISPOSITIF DE CODAGE AUDIO LES UTILISANT
Publication
Application
Priority
- US 201461943638 P 20140224
- US 201462029672 P 20140728
- KR 2015001783 W 20150224
Abstract (en)
[origin: EP3109861A1] The present invention relates to an audio encoding and, more particularly, to a signal classifying method and device, and an audio encoding method and device using the same, which can reduce a delay caused by an encoding mode switching while improving the quality of reconstructed sound. The signal classifying method may comprise the operations of: classifying a current frame into one of a speech signal and a music signal; determining, on the basis of a characteristic parameter obtained from multiple frames, whether a result of the classifying of the current frame includes an error; and correcting the result of the classifying of the current frame in accordance with a result of the determination. By correcting an initial classification result of an audio signal on the basis of a correction parameter, the present invention can determine an optimum coding mode for the characteristic of an audio signal and can prevent frequent coding mode switching between frames.
IPC 8 full level
G10L 19/20 (2013.01); G10L 25/81 (2013.01)
CPC (source: EP KR US)
G10L 19/005 (2013.01 - KR US); G10L 19/0212 (2013.01 - US); G10L 19/022 (2013.01 - US); G10L 19/125 (2013.01 - US); G10L 19/20 (2013.01 - EP KR US); G10L 25/81 (2013.01 - EP KR US)
Citation (search report)
- [XA] WO 2014010175 A1 20140116 - PANASONIC CORP [JP]
- [E] EP 2922052 A1 20150923 - SAMSUNG ELECTRONICS CO LTD [KR]
- [A] US 6453285 B1 20020917 - ANDERSON DAVID V [US], et al
- [A] US 2013185063 A1 20130718 - ATTI VENKATRAMAN SRINIVASA [US], et al
- [A] TANCEREL L ET AL: "Combined speech and audio coding by discrimination", SPEECH CODING, 2000. PROCEEDINGS. 2000 IEEE WORKSHOP ON SEPTEMBER 17-20, 2000, PISCATAWAY, NJ, USA,IEEE, 17 September 2000 (2000-09-17), pages 154 - 156, XP010520073, ISBN: 978-0-7803-6416-5
- [T] MALENOVSKY VLADIMIR ET AL: "Two-stage speech/music classifier with decision smoothing and sharpening in the EVS codec", 2015 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP), IEEE, 19 April 2015 (2015-04-19), pages 5718 - 5722, XP033064795, DOI: 10.1109/ICASSP.2015.7179067
- See references of WO 2015126228A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3109861 A1 20161228; EP 3109861 A4 20171101; EP 3109861 B1 20181212; CN 106256001 A 20161221; CN 106256001 B 20200121; CN 110992965 A 20200410; ES 2702455 T3 20190301; JP 2017511905 A 20170427; JP 6599368 B2 20191030; KR 102354331 B1 20220121; KR 102457290 B1 20221020; KR 102552293 B1 20230706; KR 20160125397 A 20161031; KR 20220013009 A 20220204; KR 20220148302 A 20221104; SG 11201607971T A 20161129; US 10090004 B2 20181002; US 10504540 B2 20191210; US 2017011754 A1 20170112; US 2019103129 A1 20190404; WO 2015126228 A1 20150827
DOCDB simple family (application)
EP 15751981 A 20150224; CN 201580021378 A 20150224; CN 201911345336 A 20150224; ES 15751981 T 20150224; JP 2016570753 A 20150224; KR 2015001783 W 20150224; KR 20167023217 A 20150224; KR 20227001823 A 20150224; KR 20227036099 A 20150224; SG 11201607971T A 20150224; US 201515121257 A 20150224; US 201816148708 A 20181001